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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 548 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 31533 =
  2. 2.Digital root of 91 × 47 =
  3. 3.Digital root of 23598 =
  4. 4.Digital root of 44502 =
  5. 5.Digital root of 27922 =
  6. 6.Digital root of 12 × 57 =
  7. 7.Digital root of 61126 =
  8. 8.Digital root of 18 × 98 =
  9. 9.Digital root of 49076 =
  10. 10.Digital root of 16781 =
  11. 11.Digital root of 30 × 51 =
  12. 12.Digital root of 81665 =
  13. 13.Digital root of 37 × 18 =
  14. 14.Digital root of 63144 =
  15. 15.Digital root of 20409 =
  16. 16.Digital root of 92135 =
  17. 17.Digital root of 31 × 89 =
  18. 18.Digital root of 39040 =
  19. 19.Digital root of 31 × 28 =
  20. 20.Digital root of 62 × 27 =
  21. 21.Digital root of 96 × 33 =
  22. 22.Digital root of 66140 =
  23. 23.Digital root of 69 × 23 =
  24. 24.Digital root of 91092 =
  25. 25.Digital root of 7279 =
  26. 26.Digital root of 97 × 58 =
  27. 27.Digital root of 15 × 82 =
  28. 28.Digital root of 34 × 32 =
  29. 29.Digital root of 81 × 17 =
  30. 30.Digital root of 21 × 32 =
  31. 31.Digital root of 71 × 27 =
  32. 32.Digital root of 94192 =
  33. 33.Digital root of 23752 =
  34. 34.Digital root of 75 × 43 =
  35. 35.Digital root of 80 × 24 =
  36. 36.Digital root of 29614 =
  37. 37.Digital root of 18087 =
  38. 38.Digital root of 78513 =
  39. 39.Digital root of 64664 =
  40. 40.Digital root of 70 × 69 =

Answer key

  1. 6
  2. 2
  3. 9
  4. 6
  5. 4
  6. 9
  7. 7
  8. 9
  9. 8
  10. 5
  11. 9
  12. 8
  13. 9
  14. 9
  15. 6
  16. 2
  17. 5
  18. 7
  19. 4
  20. 9
  21. 9
  22. 8
  23. 3
  24. 3
  25. 7
  26. 1
  27. 6
  28. 8
  29. 9
  30. 6
  31. 9
  32. 7
  33. 1
  34. 3
  35. 3
  36. 4
  37. 6
  38. 6
  39. 8
  40. 6

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